Home / 21,390.53-32,085.79-5,808.15

Finding the Fourth Proportional to 21,390.53, 32,085.79 and 5,808.15

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Solution

The fourth proportional to 21,390.53, 32,085.79 and 5,808.15 is: 8,712.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.53 : 32,085.79 = 5,808.15 : x
  2. Step 2: Convert to fraction form
    21,390.53/32,085.79 = 5,808.15/x
  3. Step 3: Cross multiply
    21,390.53x = 32,085.79 × 5,808.15
  4. Step 4: Simplify right side
    21,390.53x = 186,359,066.67
  5. Step 5: Solve for x
    x = 186,359,066.67/21,390.53
  6. Step 6: Final answer
    x = 8,712.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.